Kaiten is an excellent email client for Android phones and tablets.
Kaiten Mail is an advanced email client for Android. Based on the award-winning K-9, Kaiten has been completely redesigned to look gorgeous on your tablet. (It looks pretty snazzy on your phone too.)

Kaiten supports IMAP Push, POP3, Exchange 2003/2007 (with WebDAV).


Kaiten supports multi-folder sync, flagging, filing, signatures, bcc-self, PGP, mail on SD, multiple identities, search, configurable notifications & more!